The Duchess of Cambridge (Kate Middleton) owns a pair of blue gemstone hoop earrings by Kiki McDonough. She’s worn them seven times in public so far, most recently in 2023 to the Coronation Garden Party. They’re the Lola style in white gold, topaz and diamonds.
About the earrings:
The hoop earrings feature blue topaz gemstones punctuated with diamonds. They’re set in 18ct white gold.